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DTC Chart: Transfer Case Control Module (TCCM)

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

DTC Description Action
C1979:00 IWE Solenoid Circuit Failure: No Sub Type Information GO to Pinpoint Test B 
C1979:11 IWE Solenoid Circuit Failure: Circuit Short To Ground GO to Pinpoint Test B 
C1979:12 IWE Solenoid Circuit Failure: Circuit Short To Battery GO to Pinpoint Test B 
C1979:13 IWE Solenoid Circuit Failure: Circuit Open GO to Pinpoint Test B 
P0562:00 System Voltage Low: No Sub Type Information GO to Pinpoint Test J 
P0563:00 System Voltage High: No Sub Type Information GO to Pinpoint Test J 
P06B8:00 Internal Control Module Non- Volatile Random Access Memory (NVRAM) Error: No Sub Type Information CLEAR the DTC. REPEAT the self-test. If the DTC still sets, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
P1812:00 4-Wheel Drive Mode Select Circuit Failure: No Sub Type Information GO to Pinpoint Test M 
P1815:00 4-Wheel Drive Mode Select Short To Ground: No Sub Type Information GO to Pinpoint Test M 
P1825:00 4-Wheel Drive Clutch Relay Open Circuit: No Sub Type Information GO to Pinpoint Test E 
P1826:00 4-Wheel Drive Low Clutch Relay Circuit To Battery: No Sub Type Information GO to Pinpoint Test E 
P1827:00 4-Wheel Drive Low Clutch Relay Circuit To Ground: No Sub Type Information GO to Pinpoint Test E 
P1839:00 Transfer Case Shift Motor Open Circuit: No Sub Type Information GO to Pinpoint Test L 
P1840:00 Transfer Case Shift Motor Short Circuit To Battery: No Sub Type Information GO to Pinpoint Test L 
P1841:00 Transfer Case Shift Motor Short Circuit To Ground: No Sub Type Information GO to Pinpoint Test L 
P1849:00 Transfer Case Contact Plate 'A' Short Circuit To Ground: No Sub Type Information GO to Pinpoint Test L 
P184A:00 Transfer Case Unable To Transition Between 4x2 and 4x4 Mode: No Sub Type Information GO to Pinpoint Test L 
P184B:00 Transfer Case Unable To Transition Between 4x4 High and 4x4 Low Range: No Sub Type Information GO to Pinpoint Test A 
P1853:00 Transfer Case Contact Plate 'B' Short Circuit To Ground: No Sub Type Information GO to Pinpoint Test L 
P1857:00 Transfer Case Contact Plate 'C' Short Circuit To Ground: No Sub Type Information GO to Pinpoint Test L 
P185A:00 Differential Lock-Up Input Switch Circuit High: No Sub Type Information REFER to: Electronic Locking Differential (ELD) (8.8 Inch Ring Gear) . REFER to: Electronic Locking Differential (ELD) (9.75 Inch Ring Gear) .
P185D:00 Differential Lock-Up Control Circuit Performance: No Sub Type Information REFER to: Electronic Locking Differential (ELD) (8.8 Inch Ring Gear) . REFER to: Electronic Locking Differential (ELD) (9.75 Inch Ring Gear) .
P1861:00 Transfer Case Contact Plate 'D' Short Circuit To Ground: No Sub Type Information GO to Pinpoint Test L 
P1867:00 Transfer Case Contact Plate General Circuit Failure: No Sub Type Information GO to Pinpoint Test L 
P187A:00 Transfer Case Control Module System Voltage Low - Rear Locking Differential Disabled REFER to: Electronic Locking Differential (ELD) .
P187C:00 Differential Lock-Up Control Circuit/Open: No Sub Type Information REFER to: Electronic Locking Differential (ELD) (8.8 Inch Ring Gear) . REFER to: Electronic Locking Differential (ELD) (9.75 Inch Ring Gear) .
P187D:00 Differential Lock-Up Control Circuit Low: No Sub Type Information REFER to: Electronic Locking Differential (ELD) (8.8 Inch Ring Gear) . REFER to: Electronic Locking Differential (ELD) (9.75 Inch Ring Gear) .
P187E:00 Differential Lock-Up Control Circuit High: No Sub Type Information To diagnose the wheel speed sensor concern, REFER to: Anti-Lock Brake System (ABS) and Stability Control . REFER to: Electronic Locking Differential (ELD) .
P1891:00 Transfer Case Contact Plate Ground Return Open Circuit: No Sub Type Information GO to Pinpoint Test L 
U0100:00 Lost Communication With ECM/PCM "A": No Sub Type Information GO to Pinpoint Test G 
U0101:00 Lost Communication With TCM "A": No Sub Type Information GO to Pinpoint Test K 
U0121:00 Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information GO to Pinpoint Test H 
U0140:00 Lost Communication With Body Control Module (BCM): No Sub Type Information GO to Pinpoint Test I 
U0418:00 Invalid Data Received From Brake System Control Module: No Sub Type Information To diagnose the wheel speed sensor concern, REFER to: Anti-Lock Brake System (ABS) and Stability Control .
U2100:00 Initial Configuration Not Complete: No Sub Type Information CHECK the vehicle service history for recent service actions related to this module. This DTC sets due to incomplete or incorrect PMI procedures. If there have been recent service actions with this module, REPEAT the PMI procedure as directed by the scan tool. If there have been no recent service actions, INSTALL a new module to correct the failure to retain configuration data.
U2300:54 Central Configuration: Missing Calibration This DTC can set if one or more expected configuration data identifications is missing (gearbox type, axle ratio, tire circumference) from the BCM. CARRY OUT a self-test of the BCM. If BCM DTCs are present, REFER to: Body Control Module (BCM) . If no BCM DTCs are present, CLEAR the DTCs. CARRY OUT a TCCM self-test. If U2300:54 returns, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
U2300:55 Central Configuration: Not Configured This DTC can set upon TCCM power up only until all expected configuration data parameters (gearbox type, axle ratio, tire circumference) are received from the BCM. CARRY OUT a self-test of the BCM. If BCM DTCs are present, REFER to: Body Control Module (BCM) . If no BCM DTCs are present, CLEAR the DTCs. CARRY OUT TCCM self-test. If U2300:55 returns, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
U2300:56 Central Configuration: Invalid / Incompatible Configuration This DTC can set if one expected configuration data parameter is out of range (gearbox type, axle ratio, tire circumference) from the BCM. CARRY OUT a self-test of the BCM. If DTCs are present, REFER to: Body Control Module (BCM) . If no DTCs are present, CLEAR the DTCs. CARRY OUT a TCCM self-test. If U2300:56 returns, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
U2300:64 Central Configuration: Signal Plausibility Failure This DTC can set if the expected axle ratio or tire circumference is out of range from the BCM. CARRY OUT a self-test of the BCM. If BCM DTCs are present, REFER to: Body Control Module (BCM) . If no BCM DTCs are present, CLEAR the DTCs. CARRY OUT a TCCM self-test. If U2300:64 returns, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
U3000:04 Control Module: System Internal Failure CLEAR the DTC. REPEAT the self-test. If DTC U3000:04 is retrieved, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
U3000:41 Control Module: General Checksum Failure CLEAR the DTC. REPEAT the self-test. If DTC U3000:41 is retrieved, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
U3000:46 Control Module: Calibration / Parameter Memory Failure CLEAR the DTC. REPEAT the self-test. If DTC U3000:46 is retrieved, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
U3000:49 Control Module: Internal Electronic Failure CLEAR the DTC. REPEAT the self-test. If DTC U3000:49 is retrieved, INSTALL a new TCCM. REFER to: Transfer Case Control Module (TCCM) .
U300D:11 Ignition Input On/Start: Circuit Short To Ground GO to Pinpoint Test L 
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